There is a joke update list in the Genshin Impact thread with various buffs and nerfs making fun of the characters. It ended with this fabricated change:
(emphasis added)
Yes, it is a joke, but I really hate the bold part. It seems that unless the creators specifically designate the female as the canon option through a direct statement or a sequel (e.g. KoTOR2), there will be all sorts of excuses to insist that the male is the canon choice, and players who prefer the female protagonist are playing through a fanfiction.
Male on the box art and promotional material? Creators wanted him to be canon. Female on the box art and promotional material? Pandering to SJW or horny men. Spinoffs starring male? Evidence he is canon. Spinoffs starring female? It's just a what-if scenario. Story seem written assuming a male protagonist? Female is just an option added as an afterthought. Story seem written assuming a female protagonist? These bits that suggest a male protagonist are obviously more important.
That joke update list is full of a lot of real gross stuff beyond what you highlighted too. It is a bad read.